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mestny [16]3 years ago

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What's the question lol

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3(-4n - 9) = 21 plc solve

erma4kov [3.2K]

<h3>Answer:</h3>

$\huge{\boxed{n=-4}}$

<h3>Explanation:</h3>

$\begin{array}{cc}\begin{flushright}\text{Divide both sides of the equation by 3.}\end{flushright}&\begin{flushleft}-4n-9=7\end{flushleft}\\\begin{flushright}\text{Add 9 on both sides.}\end{flushright}&\begin{flushleft}-4n=16\end{flushleft}\\\begin{flushright}\text{Divide both sides by -4.}\end{flushrigh}&n=-4\end{array}$